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2 * Tracepoint definitions for the s390 zcrypt device driver
4 * Copyright IBM Corp. 2016
5 * Author(s): Harald Freudenberger <freude@de.ibm.com>
7 * Currently there are two tracepoint events defined here.
8 * An s390_zcrypt_req request event occurs as soon as the request is
9 * recognized by the zcrypt ioctl function. This event may act as some kind
10 * of request-processing-starts-now indication.
11 * As late as possible within the zcrypt ioctl function there occurs the
12 * s390_zcrypt_rep event which may act as the point in time where the
13 * request has been processed by the kernel and the result is about to be
14 * transferred back to userspace.
15 * The glue which binds together request and reply event is the ptr
16 * parameter, which is the local buffer address where the request from
17 * userspace has been stored by the ioctl function.
19 * The main purpose of this zcrypt tracepoint api is to get some data for
20 * performance measurements together with information about on which card
21 * and queue the request has been processed. It is not an ffdc interface as
22 * there is already code in the zcrypt device driver to serve the s390
23 * debug feature interface.
27 #define TRACE_SYSTEM s390
29 #if !defined(_TRACE_S390_ZCRYPT_H) || defined(TRACE_HEADER_MULTI_READ)
30 #define _TRACE_S390_ZCRYPT_H
32 #include <linux/tracepoint.h>
34 #define TP_ICARSAMODEXPO 0x0001
35 #define TP_ICARSACRT 0x0002
36 #define TB_ZSECSENDCPRB 0x0003
37 #define TP_ZSENDEP11CPRB 0x0004
38 #define TP_HWRNGCPRB 0x0005
40 #define show_zcrypt_tp_type(type) \
41 __print_symbolic(type, \
42 { TP_ICARSAMODEXPO, "ICARSAMODEXPO" }, \
43 { TP_ICARSACRT, "ICARSACRT" }, \
44 { TB_ZSECSENDCPRB, "ZSECSENDCPRB" }, \
45 { TP_ZSENDEP11CPRB, "ZSENDEP11CPRB" }, \
46 { TP_HWRNGCPRB, "HWRNGCPRB" })
49 * trace_s390_zcrypt_req - zcrypt request tracepoint function
50 * @ptr: Address of the local buffer where the request from userspace
51 * is stored. Can be used as a unique id to relate together
53 * @type: One of the TP_ defines above.
55 * Called when a request from userspace is recognised within the ioctl
56 * function of the zcrypt device driver and may act as an entry
59 TRACE_EVENT(s390_zcrypt_req
,
60 TP_PROTO(void *ptr
, u32 type
),
67 __entry
->type
= type
;),
68 TP_printk("ptr=%p type=%s",
70 show_zcrypt_tp_type(__entry
->type
))
74 * trace_s390_zcrypt_rep - zcrypt reply tracepoint function
75 * @ptr: Address of the local buffer where the request from userspace
76 * is stored. Can be used as a unique id to match together
79 * @rc: The bare returncode as returned by the device driver ioctl
81 * @dev: The adapter nr where this request was actually processed.
82 * @dom: Domain id of the device where this request was processed.
84 * Called upon recognising the reply from the crypto adapter. This
85 * message may act as the exit timestamp for the request but also
86 * carries some info about on which adapter the request was processed
87 * and the returncode from the device driver.
89 TRACE_EVENT(s390_zcrypt_rep
,
90 TP_PROTO(void *ptr
, u32 fc
, u32 rc
, u16 dev
, u16 dom
),
91 TP_ARGS(ptr
, fc
, rc
, dev
, dom
),
97 __field(u16
, domain
)),
102 __entry
->device
= dev
;
103 __entry
->domain
= dom
;),
104 TP_printk("ptr=%p fc=0x%04x rc=%d dev=0x%02hx domain=0x%04hx",
106 (unsigned int) __entry
->fc
,
108 (unsigned short) __entry
->device
,
109 (unsigned short) __entry
->domain
)
112 #endif /* _TRACE_S390_ZCRYPT_H */
114 /* This part must be outside protection */
116 #undef TRACE_INCLUDE_PATH
117 #undef TRACE_INCLUDE_FILE
119 #define TRACE_INCLUDE_PATH asm/trace
120 #define TRACE_INCLUDE_FILE zcrypt
122 #include <trace/define_trace.h>